Rodrigo Calderón was born in Antwerp in 1580. His father, Francisco Calder6n, a member of a family ennobled by Charles V, was a captain in the army who became afterwards comendador mayor of Aragon, presumably by the help of his son. The mother was a Fleming, said by Calder6n to have been a lady by birth and called by him Maria Sandelin. She is said by others to have been first the mistress and then the wife of Francisco Calderon. Rodrigo is said to have been born out of wedlock.
In 1598 Rodrigo Calderón entered the service of the duke of Lerma as secretary. The accession of Philip III in that year made Lerma, who had unbounded influence over the king, master of Spain. Calderon, who was active and unscrupulous, made himself the trusted agent of Lerma. In the general scramble for wealth among the worthless intriguers who governed in the name of Philip III, Calderon was conspicuous for greed, audacity and insolence. He was created count of Oliva, a knight of Santiago, commendador of Ocana in the order, secretary to the king (secretario de cdmara), was loaded with plunder, and made an advantageous marriage with Ines de Vargas. As an insolent upstart he was peculiarly odious to the enemies of Lerma. Two religious persons, Juan de Santfi. Maria, a Franciscan, and Mariana de San Jose, prioress of La Encarnacion, worked on the queen Margarita, by whose influence Calderdn was removed from the secretaryship in 1611. He, however, retained the favour of Lerma, an indolent man to whom Calder6n's activity was indispensable. In 1612 he was sent on a special mission to Flanders, and on his return was made marques de. las Siete Iglesias in 1614. When the queen Margarita died in that. year in childbirth, Calderon was accused of having used witchcraft against her. Soon after it became generally known that he had ordered the murder of one Francisco de Juaras. When Lerma was driven from court in 1618 by the intrigues of his own son, the duke of Uceda, and the king's confessor, the Dominican Aliaga, Calderon was seized upon as an expiatory victim to satisfy public clamour. He was arrested, despoiled, and on the 7th of January 1620 was savagely tortured to make him confess to the several charges of murder and witchcraft brought against him. Calderon confessed to the murder of Juaras, saying that the man was a pander, and adding that he gave the particular reason by word of mouth since it was more fit to be spoken than written. He steadfastly denied all the other charges of murder and the witchcraft. Some hope of pardon seems to have remained in his mind till'he heard the bells tolling for Philip III in March 1621. " He is dead, and I too am dead " was his resigned comment. One of the first measures of the new reign was to order his execution. Calderon met his fate firmly and with a show of piety on the 216t of October 1621, and this bearing, together with his broken and prematurely aged appearance, turned public sentiment in his favour.
He married Inés de Vargas.
